Add additional useful tests for autoLink()
Add additional useful tests for autoLink()

These new tests cover an important case that could easily be missed in
the future. Links with URL's should not be re-linked.

Refs #4998

elboletaire/cakephp,tgr0ss/cakephp,erikfig/cakephp,berrygoudswaard/cakephp,mvdriel/cakephp,ndm2/cakephp,jerems02/cakephp,CakeDC/cakephp,HavokInspiration/cakephp,et304383/passbolt_api,pbaire/cakephp,gmponos/cakephp,cakephp-fr/cakephp,adopico/cakephp,cakephp/cakephp,cakephp/cakephp,ADmad/cakephp,CakeDC/cakephp,garethellis36/cakephp,Phillaf/cakephp,jerems02/cakephp,akintoey/cakephp,thinkingmedia/cakephp,gmponos/cakephp,Balachan27/cakephp,web-player/cakephp,eboominathan/cakephp,tenkoma/cakephp,yinhe007/cakephp,ndm2/cakephp,eboominathan/cakephp,michaelze/cakephp,jeffblack360/cakephp,nrother/cakephp,mvdriel/cakephp,timhoeppner/cakephp,HavokInspiration/cakephp,mvdriel/cakephp,davidyell/cakephp,CVO-Technologies/cakephp,ADmad/cakephp,jjj117/cakephp,Balachan27/cakephp,tisu2tisu/cakephp,CakeDC/cakephp,adopico/cakephp,eryw/cakephp,ionas/cakephp,burriko/cakephp,dakota/cakephp,et304383/passbolt_api,dakota/cakephp,michaelze/cakephp,CVO-Technologies/cakephp,mvdriel/cakephp,eryw/cakephp,cakephp/cakephp,khoimt/cakephp-study,berrygoudswaard/cakephp,nrother/cakephp,kumamidori/cakephp,dkarvounaris/cakephp,elboletaire/cakephp,dakota/cakephp,khoimt/cakephp-study,cakephp/cakephp,akintoey/cakephp,web-player/cakephp,Phillaf/cakephp,cakephp-fr/cakephp,et304383/passbolt_api,elboletaire/cakephp,bravo-kernel/cakephp,cakephp-fr/cakephp,erikfig/cakephp,davidyell/cakephp,ionas/cakephp,justinyost/cakephp,petteyg/cakephp,ndm2/cakephp,petteyg/cakephp,garethellis36/cakephp,tisu2tisu/cakephp,dkarvounaris/cakephp,jeffblack360/cakephp,ionas/cakephp,jeffblack360/cakephp,tisu2tisu/cakephp,garethellis36/cakephp,burriko/cakephp,tenkoma/cakephp,tenkoma/cakephp,pbaire/cakephp,kumamidori/cakephp,erikfig/cakephp,timhoeppner/cakephp,gmponos/cakephp,bravo-kernel/cakephp,jjj117/cakephp,bravo-kernel/cakephp,garethellis36/cakephp,burriko/cakephp,tgr0ss/cakephp,berrygoudswaard/cakephp,Phillaf/cakephp,davidyell/cakephp,timhoeppner/cakephp,Balachan27/cakephp,pbaire/cakephp,thinkingmedia/cakephp,petteyg/cakephp,web-player/cakephp,thinkingmedia/cakephp,akintoey/cakephp,justinyost/cakephp,yinhe007/cakephp,tgr0ss/cakephp,ADmad/cakephp,et304383/passbolt_api,et304383/passbolt_api,tenkoma/cakephp,petteyg/cakephp,kumamidori/cakephp,eryw/cakephp,ndm2/cakephp,justinyost/cakephp,nrother/cakephp,CVO-Technologies/cakephp,jerems02/cakephp,eboominathan/cakephp,HavokInspiration/cakephp,dkarvounaris/cakephp,dakota/cakephp,yinhe007/cakephp,adopico/cakephp,khoimt/cakephp-study,ADmad/cakephp,michaelze/cakephp,CakeDC/cakephp,jjj117/cakephp